Add 42/15 and 21/27
1st number: 2 12/15, 2nd number: 21/27
42/15 + 21/27 is 161/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
42/15 = 42 × 9/15 × 9 = 378/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Add the two like fractions:
378/135 + 105/135 = 378 + 105/135 = 483/135 - 483/135 simplified gives 161/45
- So, 42/15 + 21/27 = 161/45
In mixed form: 326/45
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